A00 File Type- The quick facts
What are A00 files and how to open them
Are you having problems opening an A00 file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.
What is an A00 file?
Files that contain the .a00 file extension are commonly used by the ARJ and ALZip file compression utilities. These software applications take batches of files and compress the files into a single archive file.
Once these applications have created an archive file, that file can then be split into smaller volumes. This makes it easier for a user to transmit the files online or to store the archive file across multiple storage disks.
When an archive file is split, each volume of the archive is given its own file extension, usually in sequence. The .a00 file extension is normally given to the first volume of the split archive file.
If a user wishes to retrieve the contents of the split archive, all of the volumes of the archive file must be present.
How to open A00 files
Important: Different programs may use files with the A00 file extension for different purposes, so unless you are sure which format your A00 file is, you may need to try a few different programs.
While we have not verified the apps ourselves yet, our users have suggested 8 different A00 openers which you will find listed below.
Last updated: January 18, 2022
Suggest another file format using extension A00
While we know of one file format using the .A00 file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .A00 file.
Various apps that use files with this extension
These apps are known to open certain types of A00 files. Remember, different programs may use A00 files for different purposes, so you may need to try out a few of them to be able to open your specific file.